陆地下垫面特征对区域能量平衡过程影响的数值试验

NUMERICAL EXPERIMENTS OF THE EFFECTS OF LAND SURFACE CHARACTERS ON REGIONAL ENERGY BALANCE

陆地下垫面性质的变化将会改变地气系统之间的能量平衡和转换过程,进而影响到区域气候环境。本文主要进行了陆地下垫面特征变化对区域能量平衡过程影响的数值试验,利用三维地气耦合的区域气候模式模拟了我国华北部分地区的地面能量平衡过程。结果表明,不同的陆地下垫面特征其地面能量分配和转换机制存在较大的差异,从而影响区域气候环境的形成和变化。这一结果可为人们通过改变地表特征的方式改善区域气候和生态环境提供一定的气候学依据。

The different land surface characters would lead to large differences in exchanges of surface energy, as a result exert substantial influence on regional climate. This paper puts emphasis on the regulation mechanisms of land surface characters by the surface energy fluxes on regional climate. By utilizing a 3-D regional climate model, the surface energy budget is modeled in North China. The results show that the energy fluxes from different underlying surfaces transfered into atmosphere are significantly different. Therefore it is possible to improve the climate condition and ecological environment in regional scale by modifying the land surface characters.